<https://forum.spamcop.net/topic/8945-personal-blacklist-appears-to-be-ineffective/#comment-61160>
<http://schema.org/text>
"From the blacklist add page: \n\n \n\n\nIP addresses are not checked with the whitelist or blacklist.   \n\nThe only 2 lines checked against these lists in the message you posted are: \n\nReturn-Path: &lt;plastics[at]free2learnit.com&gt; \n\nFrom: \"plastics trainings\" &lt;plastics[at]free2learnit.com&gt; \n\nTherefore if either: plastics[at]free2learnit.com or free2learnit.com are in your blacklist, then there is an issue. \n\nFAQ about the Personal Blacklist and Whitelist : What headers are checked? \n\nThe following headers are checked against the whitelist  \n\nEnvelope Sender aka Return Path  \n\nFrom:  \n\nSender: \n"
<https://forum.spamcop.net/topic/8945-personal-blacklist-appears-to-be-ineffective/>